Filter.



PATENTED JAN; 29, 1907.

E. BURT.

FILTER.

APPLICATION FILED SEPT. 14. 1906.

2 SHEETS-SHEET 1.

HW ENTOH Edwin Bari" B y h yww v A TTOHNE Y8 PATENTED JAN. 29, 1907 3 BURT.

FILTER. I APPLICATIOII FILED SEPT. 14, 1906.

ms-snntu: 2.

W/TNESSES INVENF'OH B m m E barren EDWIN BURT,

OF EL GEO, MEXICU,

Pail? "hlll FiLTEPl.

Specification. of Letters Patent.

Patented Jan. 29, 1907.

Application filed September 14,1906. Serial No. 334.62%.

Zo (ZZZ whom it may concern.-

vented a new and Improved Filter, of which the following is a full, clear, and exact description. 3

This invention relates to iriqtrpressurc filters for preciousnnetal ore slimes, as gold, silver, 6150., having among other objects the production of an apparatus of this character of large capacity capable of filtering the shines expeditiously and at a comparatively low cost.

With this and other objects in View embodiment of the invention consists of a cylinder pivotally mounted in order to assume an inclined position at different periods of the filtering operation, the cylinder carrying a plurality of ii.ltcring-1nats swingingly suspended on its interior to separate the ,solid matter of the slime frorll the solution.- Suitable devices are provided to feed the slime to the cylinder and conduct the solution from the mats and also treat them with different mediums before and during the time the solid matter which is caked on the mat is removed. Reference to be had to the accompanying drawings, forming a part of this speciiis cation, in which similar characters of reference indicate corresponding parts in all the figures.

Figure l is a side elevation of the filter. Fig. 2 is a transverse vertical section on the line 2 2 of Fig. 1. Fig. 3 is a longitudinal vertical central section of the outer end of the filter, showing the solid matter of the slime caked on the mats. Fig. 4 is'a trans verse sectional View showing a Fragment of one of the filter-mats and. its connection with the cylinder. Fig. 5 is a sectional view through one of the filter-mats; and Fig. 6 1s a fragmentary vertical sectional view of one end of the filter when tilted in an inclined position, showing the position assumed by the filter-rnats when the filter is disposed in this relation, the filter beingshown. with the solid. mattcrof the slime caked thereon.

The numeral 1. indicates a platform or other suitable support on which are mount ed two pairs of standards or guides 2, spaced apart "for receiving journal-blocks 3, the latterbeing sustained in an adjusted position by bolts 4 passing through the guides, A cylinder 5, comprising the casing oithe filter,

Ell Uro, .Estado de Mexico, Mexico, have in-' has secured to it at its center at diametrically opposite points trunnions 6, journaled in the blocks .3. By this arrangement the cylinder is exactly balanced in a horizontal position i on the standa ds ane. may be inclined with ease when desi r on its tronnions in order that it an inclined portion 3: plfilkfizll'Jlt, provide a cylinder 7, pivotaily connected at 8 to any suitable support and carrying a piston 9,

ray assume 1 listed to a pistmi-rod it, the latter being pivotally connected at to the under side of the liltermasi n. it supply-pipe 12, leading to both ends of the cylinder, having a regulatin lve lb, provides -lor the admission of compi ssed air, steam, or water to reciprocate the piston and force the filter to any dosirednngular position.

lSiispended from the top of the 'lil er-cylinde i here a series oi filter-mats 14, said mats being preferably composcdof a double thick ness of canvm if; or othcriillcring fabric, be tween the is of which a core of wire mesh is conained, he cd oi the canvas beingsccnrel y sewed tog-ether to embrace the core and prevent any leak of the slime at this oint. The layers oi canvasat each side of t. 1e mesh are further caught together at suitable points over the of the met, as in a quilt, to prev moving the slime cakes.

[is best shown in Figs. 4 and 5, the canvas 1541f each mat embraces a curved perforated pipe 17 at its upper communicating at its center threaded or otherwise secur l l l l with a pipe 18, ed to the top of the filter-casing. The wire core 16, covered by the canvas or other fabric 15, substantially circular to the interior of the cylinder 5 and forms hingeli e oint on the line of its upper end with the canvas, adapting the mats at all times to maintain a vertical position. Each of the pipes l8 passing from the mats is provided. with a regulating valve 1'9, which in turn are each connected by a short pipe 20, all of which connect with a larger pipe 21, lon itndinally arranged to the iilter and passing to the solution-tank or other receptacle provided for the solution eX- trl cted from the slime. A valve 2 3 (shown ii dotted outline in Fig. 1) cuts oil the com- Ipunication between the tank and mats when desired. p

'The forward end of the cylinder 5 is proj yided with a eylinder-l1ead 22, having an opening 23 at its lower end, which is nor- For turning the cylinder ent their separation when reend, this pipe 17 tnally covered by a door it, pivotally connected to the head on a pm 2:). The door 24 is constructed with a series of stots 26 about its outer edge, which a ine with similar SitYtS A gasket 30 betweenthe time closed and the valve 21 leading to the solution-tank being open. The wash-water filters through the shine cake, washing out any eyanid solution contained therein, and

passes to the solution-tank. After the cake has been washed sufficiently the excess of water is forced out by opening the coinpressed-air valve 45, and if the cakes are to be dried the air-pressure is maintained in the press for several minutes. The air is then cut. oil, the door 34 opened, and the press The rear end of the c :inder 5 is provided l with a heavily -constructed head 31, through which passes a suppiy-pipe 3'3 for conducting the slime to the filter, said supply-pipe ex tending the entire length of the filter under the mats l-t and being provided with perforations 33 throughout on its upper face. A pipe 34 connects with the pipe 3'. and is pro vided with a valve 35. said pipe acting to draw from the filter any excess of stinte, pulp, or washqvater. The pipe 3) also communicates with a pipe 3t) through the intermediary of a hose 3s or other flexible connection. The pipe 36 has a valve 23? and leads the slime l'rom any suitable source of" supply to the filter and connects with an air-supply pipe 40, having a valve 41, and a watensupply pipe 42, having a valve -13. Also leading through the c \'tindcr-hcad 31 is an airsup )ly pipe 44, having a cut-ofl' valve 45 and a c tcck va'lve to, said pipe acting to admit air directly into the litter for a purpose hereinaltcr made apparent.

la the operation of the filter the cylinder 5 can be held at any desired angle when clutrgingitt; but during this period it is preferably held in a horizontal )osition. The pulp or slime is fed through the pipe 36 and into the pipe 32 through the flexible connection 38, which conducts it to the interior of the cylinder and discharges it through the perforations 33, the valves 43, 4t, and 35 at this timebeing closed. This feeding of the pulp continues under pressure usuallyranging front sixty to ninety pounds for several nunutcs, wlnch causes a cake of' slime to form on each side of the filter-mats while the filtered.

SOltttlOlt tasses up between the core and through t to pipe connections to the solutiontank. When the desired thickness of solid matter has been cakcd on the mats, the feedvalve.,.'7 is closed and the valve 35 opened. Compressed air is then admitted through the pipe 4t at a low pressure into the cylinder 5, causing the excess of slime or pulp to be forced out through the perforations in'thc pipe 32 and down the pipe 34. This air at the same time exerts a pressure on the slime cakes and keeps them from falling ofl'. when the filter-press is drained of the excess of slime, wash-water or solution is admitted through the pipe 42 by opening the valve 43, the (JOIHPI'tShttl-tt-iI valve 45' being at; this tilted by admitting air or steam to the bottom of the piston t) ,rm'iprocating in the cylinder 7. This causes the mats to s'wing to the vertical position shown in Fig. 6, thereby enlarging the space between them and the. bottom of' the cylinder at the filter-casing. Steam, air, or water is then passed through the solution-pipe 21, causing the cakes to drop from the mats and slide out of the press. The press is then brought to a horizontal position and the filtering operation repeated.

Although I have particularly described the invention in detail. it is to he understood that the precise embodiment is notv material, since the scope of the invention is limited by the annexed claims only.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- I. In a filter. a cylinder, trunnions carried bv the cylinder, supports in which the trunnions are journaled, a series of filter-mats contained in the cylinder, a pipe connecting all of said mats, means for supplying the cyl-' mdcr with an orc slime, and means for turning the cylinder to an inclined position on its trunnions.

2. in a filter, a casing, a plurality of filter; mats contained in the casing, means for supplying the casing with an ore slime, and means for tilting the casing in an inclined position;

3. In a the casing, filter-mats contained in the casing, means for supplying the casing with a slime or the like. and means for tilting the casingto an inclined )OSifQiOll. t

4. in a filter, a cyl of filter-mats contained therein, a. solutionpipe, means connecting all of said mats to the solutioit-piie, a door at; one end of the casing, means "or feeding slinte to the casing at its opposite end, and means for tilting the casing to an inclined posit ion.

5. in a filter,'a casing, trunnions carried by the casing, a support in which the trunmons arejournaled, a series offilter-mats filter, a easing, a door at one end 0f" IIO indrieal casing, a series contained in the casing, a pipe with which all of said mats communicate, means for tilting the. casmg'to an inclined position, and means for opening one end of the casing, as described.

ti. In a filter, a casing, a series of filterntats contained therein, said mats being composed of a perforated core covered with a, filtering materiel, means for tilting the casing to an inclined position, and means adapting the mats to remain vertical when the casing is thus tilted.. l

7. In a filter, a cylindrical casing, a series of filter-mats arranged parallel to each other contained therein, a pipe communicating with all of said mats, means for tilting the casing to aninclined position, a door at one end of the casing, and a pipe system adapted to feed to the casing slime, air and Water during the filtering operation, as described. i

8. In a filter, a cylindrical casing, e plurelity of perforated pipes secured to the cas 5 ing, a, filter-mat suspended from egieh pipge pipe communicating with the filter-plats, means i'or tilting the casing to an inclined position, means adapting the casing to he 0 ened, and means tofeed'to the casing 20 s me or the like to be filtered.

In testimony whereof I have signed. my name to this specification in the presenceof two subscribing Witnesses. Y

. p v f EDWIN BUR IX' Witnessesz' Al DE BAER,

JAMES J. FITZGERRELL 

